Both machines, the PCE-CD and Sega CD, have great games. Honestly, these lame FMV games sucks. The PCE-CD has games with a great soundtrack an some with english speech, titles like Sapphire or Dracula X really needs the CD medium.
Good Sega CD games are:
Lunar 1+2
Earthworm Jim SE
Dark Wizard
Lords of Thunder
Final Fight
Snatcher
Popful Mail
Shining Force CD
Keio the Flying Dragon
Robo Aleste
Flink
Vay
No single FMV game.